/Engine/Source/Runtime/Engine/Public/MaterialShared.h
bool ShouldCachePipeline ( EShaderPlatform Platform, const [FShaderPipelineType](API\Runtime\RenderCore\FShaderPipelineType) * PipelineType, const [FVertexFactoryType](API\Runtime\RenderCore\FVertexFactoryType) * VertexFactoryType ) const